The object of the game is to build words of three letters or more using the tiles that fall from the top of the playing area. Words can be constructed horizontally or vertically, and multiple words can overlap each other. If the player manages to construct the magic word at the top of the screen, the well will be cleared of all tiles and the player will receive a large bonus.

Occasionally, a free tile (denoted by a "?") will drop. Its letter can be selected by the player (either by typing it in the PC version, or scrolling through letters with a button on the console versions). If the player does not choose a letter, the block will become a random letter when it stops. Eraser blocks will fall and remove whatever letter that they land on (in the SNES version, the eraser is replaced with bombs and vials of acid).

In the Super Nintendo version, players advance from levels "A" to "J." There is no level after "J."

The background pictures (except the title screen) were taken from an earlier Tetris game by Spectrum Holobyte known as Super Tetris. The in-game music is composed by Paul Mogg. Paul Mogg and Ed Bogas did the DOS version of Super Tetris.